ASTM Standard Rounded Head Screws | McMaster-Carr

Filter by

System of Measurement

Thread Size

Length

Drive Style

Tamper-Resistant Hex

Tamper-Resistant Torx

Fastener Head Type

Finish

Hot-Dipped Galvanized

Material

Stainless Steel

Rounded Head Style

Threading

Partially Threaded

Head Diameter

Specifications Met

Drive Size

Tensile Strength

60,000 psi to 79,999 psi

80,000 psi to 99,999 psi

100,000 psi to 119,999 psi

120,000 psi or greater

Thread Type

Thread Spacing

Thread Direction

Rounded Head Profile

Thread Fit

Metric Class 6g

Unified Standard Class 2A

Unified Standard Class 3A

DFARS Specialty Metals

Fastener Strength Grade/Class

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Hardness

RoHS

REACH

Export Control Classification Number (ECCN)

How can we improve?

1,248 Products

Rounded Head Screws

Steel Button Head Hex-Drive Screws

Steel Button Head Hex-Drive Screws

Made of alloy steel for nearly twice the tensile strength of other steel screws

Stainless Steel Button Head Hex-Drive Screws

Stainless Steel Button Head Hex-Drive Screws

These button head screws won't rust or corrode when exposed to moisture and chemicals

Steel Flanged Button Head Hex-Drive Screws

Steel Flanged Button Head Hex-Drive Screws

Our strongest flanged rounded head screws

Steel Button Head Torx Plus Screws

Steel Button Head Torx Plus Screws

Our strongest Torx Plus rounded head screws

Stainless Steel Button Head Torx Screws

Stainless Steel Button Head Torx Screws

Our most corrosion-resistant button head Torx screws

Stainless Steel Button Head Hex-Drive Screw Assortments

Stainless Steel Button Head Hex-Drive Screw Assortments

Keep a variety of corrosion-resistant button head screws on hand for a range of fastening jobs

Thread-Locking Stainless Steel Button Head Hex-Drive Screws

Thread-Locking Stainless Steel Button Head Hex-Drive Screws

Corrosion and vibration resistant, these button head screws secure parts during mild vibration

Thread-Locking Steel Button Head Hex-Drive Screws

Thread-Locking Steel Button Head Hex-Drive Screws

Strong and vibration resistant to lock parts in place on machinery that experiences mild vibration

Tamper-Resistant Hex-Drive Stainless Steel Button Head Screws

Tamper-Resistant Hex-Drive Stainless Steel Button Head Screws

Our most corrosion-resistant hex-drive screws for preventing unauthorized access

Sealing Tamper-Resistant Torx Stainless Steel Button Head Screws

Sealing Tamper-Resistant Torx Stainless Steel Button Head Screws

Restrict unauthorized access while keeping out contaminants and locking in air and fluid

Tamper-Resistant Torx Stainless Steel Button Head Screws

Tamper-Resistant Torx Stainless Steel Button Head Screws

Deter unauthorized access in corrosive environments

Tamper-Resistant Hex-Drive Steel Button Head Screws

Tamper-Resistant Hex-Drive Steel Button Head Screws

Our strongest hex-drive screws for deterring unauthorized access

Steel Button Head Hex-Drive Screw Assortments

Steel Button Head Hex-Drive Screw Assortments

Keep multiple sizes of our strongest rounded head screws on hand for a variety of fastening jobs

Other Products

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

Carriage Bolts

A smooth head provides a finished look while a square neck keeps the bolt in place when using a nut

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)